The NHDev board uses the 8-bit parallel interface in 6800 mode. It is not possible to change this.We do not have a diagram showing the connections between the display and NHDev board, however, the NHDev board's pins (seen on page 6 of the user guide, here: http://www.newhavendisplay.com/nhdev/specs/NHDev_v2.pdf) match the names of the pins on the OLED. (D/C on the OLED is the same as RS on the NHDev board) As for the BS2 and BS1 pins on the OLED, BS2 should be tied HIGH and BS1 should be tied LOW.